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Loose rock wool insulation piece in a clear bag

Appliance Factory Parts

Appliance Factory Parts 15999 Rock Wool Fits VFSM VFSV VFSR-18 appliance part

SKU CH-8NMS-J66Y4

Rock wool insulation fits VFSM, VFSV and VFSR-18 models as a genuine Empire Comfort part

  • Sold asEach
  • Product typeHeating Equipment
  • Genuine Empire Comfort part, not aftermarket
  • Rock wool insulation for VFSM, VFSV, VFSR-18 models
  • Compatible with 9 American Hearth fireplace models
  • Fits 24 Empire heating appliance variants
  • Works with 90 White Mountain Hearth models

Genuine Empire Comfort Rock Wool

This genuine Empire Comfort rock wool replacement fits VFSM, VFSV and VFSR-18 burner assemblies. It is manufactured by Appliance Factory Parts under part number BRM15999 and sold as a single unit. The material restores the original insulation performance in compatible direct-vent fireplaces.

Direct-fit insulation for listed models

The part installs directly into the firebox without modification on the 90 listed White Mountain Hearth models, 24 Empire models and 9 American Hearth models. Rock wool construction matches the factory specification so the burner operates with the intended flame pattern and heat distribution. No aftermarket substitutions are used.

Replaces degraded or missing factory wool

This component replaces factory rock wool that has compressed, shifted or been lost during service. The upgrade is worth it when the existing insulation no longer fills the burner tray evenly or when a service bulletin specifies new wool for the VFSM, VFSV or VFSR-18 series. Buyers needing a different burner series or a complete burner assembly will not find that here.

How it compares

Measured against everything we stock in Replacement Grill & Appliance Parts, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 84% of the 1,446 comparable items (median $36.99).

Specifications

Product
Brand nameAppliance Factory Parts
Part numberBRM15999
Product typeHeating Equipment

Questions about this item

Does the rock wool rated for the VFSR-18 model handle the same temperature range as the original insulation?

This is a Genuine Empire Comfort part designed for the VFSM, VFSV and VFSR-18 series, so it matches the factory temperature specification for those fireplaces.

What clearance or cavity dimensions must the fireplace have for this rock wool to fit correctly?

The part is made for the VFSM, VFSV and VFSR-18 models and the compatible American Hearth, Empire and White Mountain Hearth units listed, so it fits the existing insulation cavity without modification.

How is the rock wool installed in a VFSR-18 unit, and what step do installers often miss?

Remove the old insulation, place the new rock wool into the designated cavity around the burner and pilot assembly, then ensure the retaining clips or brackets are re-secured so the material cannot shift during operation.

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